Backstitch is a sewing technique which involves creating small zigzag stitches with the purpose of securely join two cloth
pieces together. This technique adds strength and stops the fabric from coming apart. The join together can be used for a variety of sewing projects, such as hemming, sewing patches, or even creating coverlets. It gives a neat and professional look for the finished product.
Meaning of whipstitch in the English dictionary educalingo